Can you find out the missing number in the grid?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What is the next shape from answers A, B, C, and D figure?

What word is pronounced the same if you take away four of its five letters?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

If two's company, and three's a crowd, then whats four and five ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I can write cow in 13 letters.

Can You?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?